Node Joiner is adding more rows than original file

Hi,

My Joiner top input is an excel file with 4530 which I need to classify one column based on other file list, similar to a VLOOKUP on excel. Problem is, when I use the Joiner (see bellow it’s settings), it’s adding more 100+ rows, duplicating all values. I just want to do the vlookup, don’t want to add nothing. If the Joiner doesnt find any match, than add like “Error”, but it just CAN’T add more rows.

What I’m doing wrong? I heard that I have to perform a Left Join only, but I cant see this settings on Joiner node. Please help!!!